Revert r46023: "Detect new instance of the browser when running in the background in persistent"

chrome/browser/first_run_gtk.cc

Index: chrome/browser/first_run_gtk.cc
diff --git a/chrome/browser/first_run_gtk.cc b/chrome/browser/first_run_gtk.cc
index 0755a7fd859807f9af9c6b793cc48a5a0f08ce60..a424d6000c0407b870bb400e5ff7a5ae2e118333 100644
--- a/chrome/browser/first_run_gtk.cc
+++ b/chrome/browser/first_run_gtk.cc
@@ -20,8 +20,6 @@
 #include "chrome/installer/util/util_constants.h"
 #include "googleurl/src/gurl.h"
 
-CommandLine* Upgrade::new_command_line_ = NULL;
-
 bool OpenFirstRunDialog(Profile* profile, bool homepage_defined,
                         int import_items,
                         int dont_import_items,
@@ -141,47 +139,3 @@ bool FirstRun::ImportBookmarks(const std::wstring& import_bookmarks_path) {
   // for the process to return.
   return base::LaunchApp(import_cmd, true, false, NULL);
 }
-
-#if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
-double Upgrade::saved_last_modified_time_of_exe_ = 0;
-
-// static
-bool Upgrade::IsUpdatePendingRestart() {
-  return saved_last_modified_time_of_exe_ !=
-      Upgrade::GetLastModifiedTimeOfExe();
-}
-
-// static
-void Upgrade::SaveLastModifiedTimeOfExe() {
-  saved_last_modified_time_of_exe_ = Upgrade::GetLastModifiedTimeOfExe();
-}
-
-// static
-void Upgrade::RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
-  if (new_command_line_) {
-    if (!base::LaunchApp(*new_command_line_, false, false, NULL)) {
-      DLOG(ERROR) << "Launching a new instance of the browser failed.";
-    } else {
-      DLOG(WARNING) << "Launched a new instance of the browser.";
-    }
-    delete new_command_line_;
-    new_command_line_ = NULL;
-  }
-}
-
-// static
-double Upgrade::GetLastModifiedTimeOfExe() {
-  FilePath exe_file_path;
-  if (!PathService::Get(base::FILE_EXE, &exe_file_path)) {
-    LOG(WARNING) << "Failed to get FilePath object for FILE_EXE.";
-    return saved_last_modified_time_of_exe_;
-  }
-  file_util::FileInfo exe_file_info;
-  if (!file_util::GetFileInfo(exe_file_path, &exe_file_info)) {
-    LOG(WARNING) << "Failed to get FileInfo object for FILE_EXE - "
-                 << exe_file_path.value();
-    return saved_last_modified_time_of_exe_;
-  }
-  return exe_file_info.last_modified.ToDoubleT();
-}
-#endif  // (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)